Large-scale reconstruction of the Early Cretaceous Neuquen Sea (SW Gondwana): unravelling key parameters for characterization and classification of Epeiric seas

Autores
Schwarz, Ernesto; Remirez, Mariano Nicolas; Veiga, Gonzalo Diego; Isla, Manuel Fermín
Año de publicación
2023
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
.Epeiric seas were common in deep times, but modern analogues are rare. Reconstruction of ancient examples is usually limited by available data, which also hampers the conceptualization of their variability and key controlling parameters. In this study we summarize and integrate a large stratigraphic dataset of a relatively small, semi-restricted Cretaceous epeiric sea in SW Gondwana to reconstruct oceanographic connection with adjacent ocean through time, areal distribution of sediments entering the marine basin, and sediment dispersal pathways within it. The Valanginian–Hauterivian study interval represents an exceptional record of continental and marine sediments deposited in the Neuquén Sea, semi-connected with the proto-Pacific Ocean across a volcanic arc. This interval is organized in three transgressive–regressive sequences (Lower, Middle, and Upper) defined by linked depositional systems, macrobenthic bioevents, and stratal patterns. Paleogeographic reconstructions show a consistent E–W proximal–distal depositional trend and a major fluvial system located in its SE apex. Dispersal pathways within the distal marine settings allow defining a non-uniform, along-depositional strike scenario, with a locus of siliciclastic deposition westwards of a major deltaic system and increasing carbonate contribution away from it. The degree of connection between the Neuquén Sea and the ocean varies over time with a probable peak near the base of Middle Sequence. Key attributes reconstructed for the Neuquén Sea, namely significant restriction, major sediment supply in one apex, and asymmetric distribution of sediments in the distal settings, are comparable with configurations observed in the present Persian Gulf and Adriatic Sea. Comparisons with ancient examples (e.g., Western Interior Sea or North American Seaway) suggest contrasting paleogeographic models, but at the same time reinforce the value of these key parameters to produce better discrimination between the possible spectrum of epeiric seas. In that sense, building classifications for epeiric seas based on these parameters (size, degree of ocean connection, sediment entry points, and sediment pathways), appears as the next challenge for better reconstructions of these environments worldwide.
Fil: Schwarz, Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Remirez, Mariano Nicolas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina. George Mason University; Estados Unidos
Fil: Veiga, Gonzalo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Isla, Manuel Fermín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
36th International Meeting of Sedimentology
Dubrovnik
Croacia
Croatian Geological Society
International Association of Sedimentologists
Materia
STRATIGRAPHY
EPEIRIC SEAS
NEUQUEN BASIN
CRETACEOUS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/229241
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/229241
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Large-scale reconstruction of the Early Cretaceous Neuquen Sea (SW Gondwana): unravelling key parameters for characterization and classification of Epeiric seasSchwarz, ErnestoRemirez, Mariano NicolasVeiga, Gonzalo DiegoIsla, Manuel FermínSTRATIGRAPHYEPEIRIC SEASNEUQUEN BASINCRETACEOUShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1.Epeiric seas were common in deep times, but modern analogues are rare. Reconstruction of ancient examples is usually limited by available data, which also hampers the conceptualization of their variability and key controlling parameters. In this study we summarize and integrate a large stratigraphic dataset of a relatively small, semi-restricted Cretaceous epeiric sea in SW Gondwana to reconstruct oceanographic connection with adjacent ocean through time, areal distribution of sediments entering the marine basin, and sediment dispersal pathways within it. The Valanginian–Hauterivian study interval represents an exceptional record of continental and marine sediments deposited in the Neuquén Sea, semi-connected with the proto-Pacific Ocean across a volcanic arc. This interval is organized in three transgressive–regressive sequences (Lower, Middle, and Upper) defined by linked depositional systems, macrobenthic bioevents, and stratal patterns. Paleogeographic reconstructions show a consistent E–W proximal–distal depositional trend and a major fluvial system located in its SE apex. Dispersal pathways within the distal marine settings allow defining a non-uniform, along-depositional strike scenario, with a locus of siliciclastic deposition westwards of a major deltaic system and increasing carbonate contribution away from it. The degree of connection between the Neuquén Sea and the ocean varies over time with a probable peak near the base of Middle Sequence. Key attributes reconstructed for the Neuquén Sea, namely significant restriction, major sediment supply in one apex, and asymmetric distribution of sediments in the distal settings, are comparable with configurations observed in the present Persian Gulf and Adriatic Sea. Comparisons with ancient examples (e.g., Western Interior Sea or North American Seaway) suggest contrasting paleogeographic models, but at the same time reinforce the value of these key parameters to produce better discrimination between the possible spectrum of epeiric seas. In that sense, building classifications for epeiric seas based on these parameters (size, degree of ocean connection, sediment entry points, and sediment pathways), appears as the next challenge for better reconstructions of these environments worldwide.Fil: Schwarz, Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Remirez, Mariano Nicolas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina. George Mason University; Estados UnidosFil: Veiga, Gonzalo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Isla, Manuel Fermín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina36th International Meeting of SedimentologyDubrovnikCroaciaCroatian Geological SocietyInternational Association of SedimentologistsInternational Association of Sedimentologists2023info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectReuniónBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/229241Large-scale reconstruction of the Early Cretaceous Neuquen Sea (SW Gondwana): unravelling key parameters for characterization and classification of Epeiric seas; 36th International Meeting of Sedimentology; Dubrovnik; Croacia; 2023; 388-388978-953-6907-79-3CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iasdubrovnik2023.org/Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:41:17Zoai:ri.conicet.gov.ar:11336/229241instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:41:17.545CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Large-scale reconstruction of the Early Cretaceous Neuquen Sea (SW Gondwana): unravelling key parameters for characterization and classification of Epeiric seas
title Large-scale reconstruction of the Early Cretaceous Neuquen Sea (SW Gondwana): unravelling key parameters for characterization and classification of Epeiric seas
spellingShingle Large-scale reconstruction of the Early Cretaceous Neuquen Sea (SW Gondwana): unravelling key parameters for characterization and classification of Epeiric seas
Schwarz, Ernesto
STRATIGRAPHY
EPEIRIC SEAS
NEUQUEN BASIN
CRETACEOUS
title_short Large-scale reconstruction of the Early Cretaceous Neuquen Sea (SW Gondwana): unravelling key parameters for characterization and classification of Epeiric seas
title_full Large-scale reconstruction of the Early Cretaceous Neuquen Sea (SW Gondwana): unravelling key parameters for characterization and classification of Epeiric seas
title_fullStr Large-scale reconstruction of the Early Cretaceous Neuquen Sea (SW Gondwana): unravelling key parameters for characterization and classification of Epeiric seas
title_full_unstemmed Large-scale reconstruction of the Early Cretaceous Neuquen Sea (SW Gondwana): unravelling key parameters for characterization and classification of Epeiric seas
title_sort Large-scale reconstruction of the Early Cretaceous Neuquen Sea (SW Gondwana): unravelling key parameters for characterization and classification of Epeiric seas
dc.creator.none.fl_str_mv Schwarz, Ernesto
Remirez, Mariano Nicolas
Veiga, Gonzalo Diego
Isla, Manuel Fermín
author Schwarz, Ernesto
author_facet Schwarz, Ernesto
Remirez, Mariano Nicolas
Veiga, Gonzalo Diego
Isla, Manuel Fermín
author_role author
author2 Remirez, Mariano Nicolas
Veiga, Gonzalo Diego
Isla, Manuel Fermín
author2_role author
author
author
dc.subject.none.fl_str_mv STRATIGRAPHY
EPEIRIC SEAS
NEUQUEN BASIN
CRETACEOUS
topic STRATIGRAPHY
EPEIRIC SEAS
NEUQUEN BASIN
CRETACEOUS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv .Epeiric seas were common in deep times, but modern analogues are rare. Reconstruction of ancient examples is usually limited by available data, which also hampers the conceptualization of their variability and key controlling parameters. In this study we summarize and integrate a large stratigraphic dataset of a relatively small, semi-restricted Cretaceous epeiric sea in SW Gondwana to reconstruct oceanographic connection with adjacent ocean through time, areal distribution of sediments entering the marine basin, and sediment dispersal pathways within it. The Valanginian–Hauterivian study interval represents an exceptional record of continental and marine sediments deposited in the Neuquén Sea, semi-connected with the proto-Pacific Ocean across a volcanic arc. This interval is organized in three transgressive–regressive sequences (Lower, Middle, and Upper) defined by linked depositional systems, macrobenthic bioevents, and stratal patterns. Paleogeographic reconstructions show a consistent E–W proximal–distal depositional trend and a major fluvial system located in its SE apex. Dispersal pathways within the distal marine settings allow defining a non-uniform, along-depositional strike scenario, with a locus of siliciclastic deposition westwards of a major deltaic system and increasing carbonate contribution away from it. The degree of connection between the Neuquén Sea and the ocean varies over time with a probable peak near the base of Middle Sequence. Key attributes reconstructed for the Neuquén Sea, namely significant restriction, major sediment supply in one apex, and asymmetric distribution of sediments in the distal settings, are comparable with configurations observed in the present Persian Gulf and Adriatic Sea. Comparisons with ancient examples (e.g., Western Interior Sea or North American Seaway) suggest contrasting paleogeographic models, but at the same time reinforce the value of these key parameters to produce better discrimination between the possible spectrum of epeiric seas. In that sense, building classifications for epeiric seas based on these parameters (size, degree of ocean connection, sediment entry points, and sediment pathways), appears as the next challenge for better reconstructions of these environments worldwide.
Fil: Schwarz, Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Remirez, Mariano Nicolas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina. George Mason University; Estados Unidos
Fil: Veiga, Gonzalo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Isla, Manuel Fermín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
36th International Meeting of Sedimentology
Dubrovnik
Croacia
Croatian Geological Society
International Association of Sedimentologists
description .Epeiric seas were common in deep times, but modern analogues are rare. Reconstruction of ancient examples is usually limited by available data, which also hampers the conceptualization of their variability and key controlling parameters. In this study we summarize and integrate a large stratigraphic dataset of a relatively small, semi-restricted Cretaceous epeiric sea in SW Gondwana to reconstruct oceanographic connection with adjacent ocean through time, areal distribution of sediments entering the marine basin, and sediment dispersal pathways within it. The Valanginian–Hauterivian study interval represents an exceptional record of continental and marine sediments deposited in the Neuquén Sea, semi-connected with the proto-Pacific Ocean across a volcanic arc. This interval is organized in three transgressive–regressive sequences (Lower, Middle, and Upper) defined by linked depositional systems, macrobenthic bioevents, and stratal patterns. Paleogeographic reconstructions show a consistent E–W proximal–distal depositional trend and a major fluvial system located in its SE apex. Dispersal pathways within the distal marine settings allow defining a non-uniform, along-depositional strike scenario, with a locus of siliciclastic deposition westwards of a major deltaic system and increasing carbonate contribution away from it. The degree of connection between the Neuquén Sea and the ocean varies over time with a probable peak near the base of Middle Sequence. Key attributes reconstructed for the Neuquén Sea, namely significant restriction, major sediment supply in one apex, and asymmetric distribution of sediments in the distal settings, are comparable with configurations observed in the present Persian Gulf and Adriatic Sea. Comparisons with ancient examples (e.g., Western Interior Sea or North American Seaway) suggest contrasting paleogeographic models, but at the same time reinforce the value of these key parameters to produce better discrimination between the possible spectrum of epeiric seas. In that sense, building classifications for epeiric seas based on these parameters (size, degree of ocean connection, sediment entry points, and sediment pathways), appears as the next challenge for better reconstructions of these environments worldwide.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Reunión
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/229241
Large-scale reconstruction of the Early Cretaceous Neuquen Sea (SW Gondwana): unravelling key parameters for characterization and classification of Epeiric seas; 36th International Meeting of Sedimentology; Dubrovnik; Croacia; 2023; 388-388
978-953-6907-79-3
CONICET Digital
CONICET
url http://hdl.handle.net/11336/229241
identifier_str_mv Large-scale reconstruction of the Early Cretaceous Neuquen Sea (SW Gondwana): unravelling key parameters for characterization and classification of Epeiric seas; 36th International Meeting of Sedimentology; Dubrovnik; Croacia; 2023; 388-388
978-953-6907-79-3
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://iasdubrovnik2023.org/
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv International Association of Sedimentologists
publisher.none.fl_str_mv International Association of Sedimentologists
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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